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(No Model.)

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PUNGHING MACHINE.

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Patented Apr. 19, 1887.

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Nil Ill UNITED STATES ATENT muon,

EDMOND PIERRE BAVILLE, OF BRUSSELS, BELGIUM, ASSIGNOR TO JULIEN PC NTY, OF SAME PLACE, AND HENRY HCVARD, OF CCVENTRY, R. I.

PUNCHlNG-NIACHINE.

SPECIFICATION forming part of Letters Patent No. 361,570, dated April 19, 1887.

Application filed October 27, 1586. Serial No. 217,318. (No model.)

.To all whom it may concern:

Be it known that I, EDMOND PIERRE BAVILLE, of Brussels, in the Kingdom of Belgium, have invented certain new and useful Improvements in Machines for Punching, Shaping, or Cutting Metal, (for which I have obtained a patent in Belgium, No. 73,983, dated July 26, 1886,) of which the following is a specification.

The invention consists in'certain features of novelty,which are particularly pointed outin the claims, being first fully described with reference to the accompanying drawings, in which- Figure 1 is a vertical section on the line 1 1, Fig. 3.

v a plan view, ofthe complete machine. Fig. 4 is a vertical section, and Fig. 5 a plan View, of the holder for the cutting-tool and the article 2O being eut. Fig. 6 is a sectional elevation, showing in detail some of the parts hereinalter more particularly referred to.

The frame of the machine consists of an integral casting having a pair of arms or standards, A and A', projecting upward, from the rear sides of which arms project brackets WV and W', respectively, which carry at their eX- tremities journal-boxes, in which is journaled the main driving-shaft A of the machine.

3o This shaft is provided at each end with a iiywheel, V and V, and a belt-pulley, o and o', and at the center with a pinion, A2, which meshes with a pinion, A3, keyed to the center ot' a counter-shaft, B, turning in bearings in the extremities of the arms A A.

It may here be observed that the machine shown in the drawings is, in its nature, duplex, the parts on opposite sides of the pinion A`` being absolute duplicates of each other. It will 4o sufce, therefore, for the purposes of this description, to refer to the parts on one side only, the corresponding parts on the opposite side being designated by the same reference-letters with the addition of the prime mark C).

C represents the sliding sleeve of a clutch `which is secured to the shaft B, so as to be in` capable of rotary but capable of longitudinal movement thereon, by means of a spline and groove, as shown in Fig. 1. The other half of 5o this clutch consists of a sleeve, D, which has Fig. 2 is a front elevation, and Fig. 3V

Patented in Belgium July Q6, 1886, No. 73,983.

formed on one end thereof clutch-teeth and ou the other end cog-teeth E, which latter occupy a socket formed in the arm A, as shown more clearly in Fig. 6. The teeth of this cog E gear with the teeth formed on one face of a bar, F, which works within a groove cut in the end of the arm A, being held iu place therein and iu mesh with the cog E by a plate, G, secured to the end of the arm by screw-bolts. This rack-bar F carries at its lower end the 6o punch f, and is moved downward by the cogwheel E whenever the sliding member C of the clutch is brought into engagement with the other member, D, it being again elevated by springs H as soon as the two members of the clutch are disengaged. These springs H surround rodsl I, projecting upward from the arm A, on opposite sides of the rack-bar F, and bear against the under side of a crosshead, J, which slides on said rods and is con- 7o nected with the said rack-bar, nuts being placed on the extremities ofthe rods I to prevent the springs from forcing the crosshead off.

The mechanism for engaging and disengaging the two members of the clutch will now be described.

K represents a short lever, bifurcated at one end and provided with short toes for projecting into the circumferential groove in the 8o sliding member of the clutch in the usual way, being i'ulcrumed atan intermediate point to a bracket, L, projecting from the side of the arm A. The other end of this lever is passed loosely through an eye formed through a piece, M, which latter is provided on its under side with a socket for the reception of the upper extremity of a lever, N, the latter being i'ulcrumed to a bracket, g, projecting from the edge of the plate G, and preferably formed in tegral therewith. The lower end of this lever is crooked, so as to enable the operator to move it to one side with his leg, whereby the sliding member C of the clutch is shifted into engagement with the other member, and the 95 rack-bar F caused to descend. lVhen the rack-bar Fhas descended as far as it is desired, a tappet or trip, O, projecting from it comes against the inclined face of a lug projecting upward from the bifurcated end of the roo' lever K, and forces it, and consequently the sliding member C of the clutch, toward the pinion A. This disengages the clutch and permits the springs H to elevate the rack-bar in the manner already described.

So muchof the machine as has thus far been described is applicable to all classes of metalworking machines which operate by a reciproeating punch. For dressing the heads ofbolts,

nuts, and similar purposes I employ a holder constructed as follows:

Q is a heavy metal casting perforated from top to bottom for the passage of the article being operated upon. Extending into the body of this casting and opening into the eye or perforation thereof at opposite points are grooves or recesses within which fit the tools R,which, for the purpose ofdressing the opposite sides of nuts and the heads of bolts, consist of rectangular blocks having teeth or serrations formed on their adjacent faces. The grooves in which these tools fit do not extend completely through the casting, but terminate at such a point as to leave offsets or shoulders for supporting the tools against the heavy pressure to which they are necessarily subjected. Extending completely through the casting Q, and at right angles to the grooves just mentioned, are other grooves in which fit rectangular blocks S, whose adjacent faces are held in contact with the sides of the article being operated upon until the punch descends by means of springs or feathers s, fitting in grooves in the backs of said blocks and bearing against the walls of the grooves in which said blocks work. By these blocks the article is held in proper position between the cutters H, said blocks being forced to descend with said bolt under the influence of the punch, all falling together into the enlarged space or cavity T, formed in the under side of the casting Q. By each operation the two opposite sides of the article are dressed, the operation being repeated as often as necessary to produce the desired shape.

In order to facilitate the insertion of bolts with long stems without necessitating the elevation of the punchf more than is absolutely necessary to clear the bolt-head when in place, (see Fig. 1,) and thus reduce its extent of movement to a minimum, the casting or holder Q is pivoted, as at q, to one side of the vertical line of the punch, so as to enable it to be swung to one side. VIfhe bolt may then be inserted and the holder swung back into position for receiving the impact of the punch, a handle, U, being provided for this purpose.

It may be here said that the rack-ban7 so called, constitutes in effect the plunger of the machine, and that portions of the inven` tion are applicable to machines having plungers generally, without regard to the particular mechanism by which said plungers are moved.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is

l. The combination, with the plunger and a clutch for connecting its operating mechanism with the driving-shaft, of a trip or tappet carried by said plunger and adapted to shift the sliding member of the clutch when the plunger has descended as far as is desired, substantially as set forth.

2. The combination, with a plunger, a revolving shaft, and a clutch for connecting said shaft and plunger, of a trip carried vby the plunger for shifting the clutch, .and a spring for retracting said plunger, substantially as set forth.

3. 'l'he combination, with shaft and the two members of a clutch, one of which is provided with cog-teeth, of the rackebar and a tappet or trip carried by said rack-bar and adapted to shift the clutch, substantially as set fort-h.

4. The combination of the shaft B, the sliding member C of the clutch, the lever K for shifting said member, the member D of the clutch, having teeth d and cog-teeth E, the bar F, having teeth meshing with the cog-teeth E, and the punch carried by said' bar, substantially as set forth.

5. The combination, with the rack-bar Fand cog E, gearing therewith, of a rotary shaft and a clutch for connecting said shaft with said cog for turning the latter in one direction, a trip carried by said bar for shifting the clutch, and a spring for moving said bar in the other direction, substantially as set forth.

6. The combination, with the arm A, of the rack-bar F, the cross-head J, to which said bar is connected, the rods I, extending upward from the arm A, the springs H, interposed between the top side of said arm and the under side of the said cross-head, the cog-wheel E, and means for connecting the latter with a moving shaft and disconnecting it, substantially as set forth.y

7. The combination, with the shaft and the clutch mounted thereon, of the operating-lever K, having inclined` yprojections P, and the plunger having tappet O, for engaging said inclined projection for shifting the clutch, substantially as set forth.

8. The combination, with the shaft and the clutch mounted thereon, of the lever lK,\en gaging the sliding member of said clutch, and the operatinglever N, having a sliding connection with the lever K, substantially as set forth. v

9. The combination, with the plunger, of the perforated casting Q and the cutters arranged therein, substantially as set forth.

l0. The combination, with the plunger, of the perforated casting Q, the cutters R, and the grippingblocks S, for holding the article in proper position between the said cutters, substantially as set forth.

In testimony whereof my hand.

EDMOND PIERRE BAVILLE.

Witnesses:

LoN DOGGUIER, AUG.. Fonrnssnn.

I have hereunto set ICC 

